Some may remember hearing of a "psychic" (mind-reading) horse called Clever Hans. The following is a link via Project Gutenberg to a treatise on th.e experiments and the results:

http://www.gutenberg.org/files/33936...-h/33936-h.htm

It's quite lengthy and the files can be downloaded to certain electronic books. To access them, go to the website ( http://www.gutenberg.org/browse/titles/r ) and scroll down to (under "R") Rahn, Carl.